Thank you for your question! The FacialDefy 4.0 includes **1.5mm and 2.0mm cartridges**, with the 2.0mm cartridge intended for selected eye-contour treatments. However, the delicate eye area requires special care. **Do not use HIFU directly on the eyelids, eyeballs, or inside the eye socket**, even with the smallest cartridge. We recommend having any treatment near the eyes performed by a properly trained professional. If you need guidance on the appropriate cartridge and safe treatment areas, please contact **service@freyara.com**.